Type of defects and their significance, Mechanical Engineering

TYPE OF DEFECTS AND THEIR SIGNIFICANCE

 

Defects in weldments in general can be classified as follows:

I. Defects involving inadequate bonding

  • Lack of fusion
  • Incomplete penetration

 


II. Foreign inclusions

  • Slag
  • Oxide films
  • Tungsten

 


III. Geometric Defects

  • Undercut
  • Excessive reinforcement
  • Burn through or excessivepenetration
  • Distortion
  • Improper weld profile.

 


IV. Metallurgical Defects

  • Cracks
  • Gas porosity
  • Arc strikes
  • Embrittlement
  • Structural notches
Posted Date: 9/17/2012 8:54:13 AM | Location : United States







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